4" Horizontal/Vertical Mount Fire Damper 2634-28X28 Residential Registers & Grilles enclosed in valve to assure

enclosed in valve to assure trouble-free operation

Front blades are parallel to the shortest dimension

Galvanized Finish

Options * 2800 Series - Dynamic Fire Damper * Sleeve variations * 304 stainless steel construction * Fractional and odd sizes available h3

14" and 16" * Soft White Options * 825 MA - modular core fixed blade diffuser with field adjustable air patterns * Field installable Bowtie Damper (BD) (sizes 6-14") * 825 OR - factory installed opposed radial damper (sizes 6"-14") * 825 FR - U

4" Horizontal/Vertical Mount Fire Damper 2634-28X28 Residential Registers & Grilles enclosed in valve to assureh3. Standard Features * 2633 Square or rectangular out of airstream fire damper for vertical mount only. * 2634 Square or rectangular Spring actuated (6) out of airstream fire damper for horizontal or vertical mount. * UL and California State Fire Marshall approved * 4 1 4" standard frame style * Maximum dimension 60w, 52h * Interlocking steel roll formed blade (3) with roll formed frames (1) * Blade lock (5) * Damper manufactured from corrosion